Shutter binder for looms



April 5, 1932. E. R HOLMES SHUTTLE BINDER FOR LOOMS Filed Dec. 28, 1929 Lida/0a.

Patented Apr. 5, 1932 UNITED STATES MASSACHUSETTS PATENT OFFICE.-

ELBRIDGE :a. HOLMES, 0 WORCESTER, MASSAcHUSETTs' SSIsNoa To oEoMrTon e KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION or SHUTTER BINDER EO Looms i I Application filed December as, 1929. Seria1 No.417,213.'

This invention relates to improvements in shuttle binders for looms and it is the general object of the invention to provide such a device preferably of pressed sheet steel so formed as to cooperate properly with a shuttle.

When a shuttle enters its box with the eye leading, the weft thread lies between the binder and the adjacent wall of the shuttle. It is necessary to provide clearance for the thread, otherwise it will be pinched and broken, and it is an important object of my present invention to reinforce the binder .by bending the upper and lower edges thereof toward each other so as to lie on the shuttle side of the binder, the edges being spaced to define a clearance groove for the weft.

It is customary practice to provide a pivot pin for the binder whether-the latter be used for instance at the single box end of an automatic loom or at the drop box end of a fancy loom. The binder ordinarily has a very slight angular movement with respect to the lay and in order to obviate the use of a fulcrum it is an important object of my present invention to provide a leaf spring between the relatively fixed part of the shuttle box and the binder, said spring being capable of flexing through the small angle required without danger of breaking.

It is another object of my present invention to locate one end of the supporting spring between the folded top and bottom edges of the binder, this construction locating the slot near the shuttle and at the same time keeping the spring spaced from the thread of the shuttle by'a distance equal substantially to the thickness of the stock of which the binder is made.

It is another object of my invention to provide a spring mounted binder and a'pair of spaced stops to engage it so that the resilience of the binder will act to check the shuttle without placing undue strain onthe spring mounting.

With theseand other objects in view'which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims. 1

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth, V Fig. 1 is a front elevation of the drop box end of a loom havingmy invention applied thereto, a t

Fig. 2 is a top plan view taken in the dircc-i tion of arrow 2, Fig. 1,

Fig. 3 is an enlarged front elevation of the binder, Y W

Figs. 4 and 5 are vertical sections on lines 4- 1 and 55, respectively, of Fig. 8, on an enlarged scale, j Y

Fig. 6 is a vertical section on line 6-6 of Fig. 2, on an enlarged-scale, i

Fig. 7 is an enlarged horizontal section on line 7-7 of Fig. 1, and

Fig; 8 is adetail vertical section on line 88 of Fig. 7. I

Referring to Fig. 1, I have shown a lay 10 having box guides 11 and 12 which receive, respectively, tongues 18 and 14 on a gang of shifting boxes 15. The-inner ends of the boxes are provided with ears 16 which sup-- port a vertically extending binder pin The lay has the usual protector rod'18 from which upwardly projects a protector finger 19. i e The outer end of the box has a vertical web 20 which has rigid therewith a Supporting plate 21. The latter may be formed either as an integral part of the box structure or may be secured thereto as a separate piece. The matter thus far described, with the exception of the securing plate 21, may be substantially the same as that found in the usual form of fancy or drop box loom. As

the shuttle S enters the box it will pass into that cell of the gang which is opposite the lay race and lie against the rear wall 2250f the box. 1

My invention relates to the so-called hinder or swellwhich checks the shuttle as it enters the box and in carrying my invention into efiectI provide a binder 30 formed of sheet steel and having a vertical body portionjBl which in this instance is on the outside or front of the binder and-opposite the shuttle. The top and bottom edges of the binder are folded over and downwardly as at'32 and 33,

respectively, defining a groove 34 which is any burrs'which may lie along the edges of the groove to save the shuttle from undue preferably in horizontal alignment with a groove 35 formed in the shuttle S. In order to provide comparatively smooth corners for the groove 35 I prefer to fold the binder in such a waythat the shuttle engaging surfaces 36 and 37 of the bentedges were uppermost in a previous punching operation. In this'way the die when descending will .form a slight rounding of the corners which later define the groove 35. If this procedure is not followed it will be desirable to remove wear. a

- In order to mount the binder. I provide a relativelyv stiff flat leaf spring 40, a part of which as shown in Figs. 3 and 4 lies between the'bentedges 32 and 33 on one side and the wall or body portion 31 on the opposite side. In this way the spring is restrained against lateral displacement and by properly forming the binder with respect to the width'ofthe spring the latter may be held tightly in position so that there is practically no relative motion between the binder and that part of the spring which is inclosed thereby. :In order to prevent endwise displacement of the spring I provide rivets or other securing means 41 passing'through the binder and spring.

The outer or left end of the springas viewed in Figs. 1 and 3 may fit snugly in a groove 42 formed in the plate 21. A block 43 has a parallel sided projection 44 which enters the groove 42 and is held thereby against angular motion relative to the plate. A groove 45 is formed in the block 43 to receive the foot 46 ofa binder engaging leaf spring 47. A single bolt .or screw 48 passes through the binder spring, block and supporting leaf spring 40 and is secured to the plate 21, as by screw threads. In this way a comparatively large area is brought to bear against the leaf springs 40 to hold the same in position independently of any direct contact which the springs may, have, -with their supporting screwsor similar devices 48.

With the usual arrangement the shuttle is checked in part by the resilience of the binder itself, and in order toretain this action, I

- provide a stop pin50 which passes through ears 51 .formed'on the gang of boxes. This pin lies in front of the binders and may be normally; engaged by them. The binder is formed with a curve 52 the rearmost part of whichflies between pins 17 and 50, the binder being out of contact with the shuttle at points immediately behind the pin 50. In this way shuttles of slightly Varying widths may be used." n Under normal conditions with the shuttle box empty, the spring 47 and the pressure of the protector finger will hold the binder rearwardly toward the back wall of the shuttle motion. Further motion of the shuttle into the box is resisted by the binderindep endent- "1y of the leaf spring40.

In'order to be able to remove the binder quickly for replacement or adjustment I form the 'leaf'spring 40 with an open longitudinal slot '60. whichextends inwardly from the outer or left end as viewed in Fig. 3. By loosening the bolt or screw 48 the binder may be taken out without removing the block 43 or binder spring 47. 1 v From the foregoing it will'be seen that I have provided a simple-form ofpresse'd steel binder wherein the usual pivot is eliminated and in its place is substituted a spring which returns the binder to normal shuttle check ing position. So far as certain phases of my invention'are concerned I deem it necessary to havethe binder formed ofpressed metal, inasmuch as the spring can act satisfactorily independently of the particular form of binder to which it is attached. It will further-be seen that the binder fisso shaped as to retain thespring in position integral edges which define between them a space for the thread of the shuttle, the thicknessjof said ends being 'sufiicie'ntto hold the-spring bemade thereinbythose skilled in. the art without departing from the spirit and scope of the invent-ion and I do 'not wish to be lim-- ited to the details herein disclosed, but what I claim is: g

1. A shuttle binder for a shuttle box having a binder attaching element, said binder having arelatively stiff body to engage the shuttle and having a less stiff spring secured thereto and v attached toithe element and forming thesole means of supportifor the binder with respect to the box said relatively stiff body overlapping the spring and held by the latter{ against angular motion;

2. A shuttle binder for a shuttle box hav ing a binder attaching element, a [binder formed of sheet metal bent so as to have the upper and lower edges thereofextending toward each other, and a flat spring located between the bent edges and heldfixed to the binder by said edges, said spring being attached to the element and formingrthe principal means of support for said binder and said spring flexing as the binder is moved bythe shuttle.

3. A shuttle binder for a shuttleboxhaving a binder attaching element being formed of overlying a portion of the binder and coact- I sheet metal bent so as to have the upper and ing therewith to reslst angularmotion therelower edges thereof extending toward each other, said binder having a relatively stiff body to engage the shuttle and having a less stiff spring secured thereto and attached to the element and forming the principal means of support for the binder with respect to the box, the bent edges defining between them a groove for the thread of the shuttle.

4. In a loom shuttle box having an attaching portion, a binder for the shuttle having a relatively stiff body, a substantially fiat leaf spring secured to the binder and possessed of less stifl'ness than the body, and means to secure one end of said spring to the attaching portion of the shuttle box, said spring being the principal support for the binder and flexing with the binder as the latter is moved with the shuttle, said relatively stiff body having a portion overlapping the secured part of the fiat leaf spring to resist any angular motion between the stiff body and leaf spring.

5. A shuttle box for a loom, an attaching plate rigid with the relatively stiff shuttle box, a shuttle binder, a less stiff leaf spring secured at one end to the binder, means to secure the other end of the leaf spring to the attaching plate, said spring forming a non-pivotal resilient support for the binder and moving with the latter as the shuttle enters a box, said relatively stiff binder overlapping the spring and held by the latter against angular motion.

6. A shuttle binder for aloom formed of pressed metal, said binder having a substantially vertical body portion and having the top and bottom edges thereof bent along substantially horizontal lines to lie substantially parallel to the body portion, said edges forming shuttle engaging portions of the binder and being separated to define a groove for the thread of the shuttle.

7. A shuttle binder formed of pressed metal and having a body the top and bottom edges of which are bent along lines extending longitudinally of the binder to form reinforcing edges, the latter being spaced to define a longitudinally extending thread groove. 7

8. A shuttle binder formed of pressed metal and having a body the top and bottom edges of which are bent along lines extend.- ing longitudinally of the binder to form reinforcing edges the latter being spaced to define a longitudinally extending thread groove,

and a resilient supporting member located between the bent edges and the body of the binder and forming part of the binder by means of which the latter may be supported.

9. In a loom, a shuttle box, a relatively stifi shuttle binder, and a less stiff supporting means between the binder and box forming the only support for the binder, said means fixed my sig In testimony whereof I have hereunto af- 

